Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix OOB read in smb2_ioctl_query_info QUERY_INFO path smb2_ioctl_query_info() has two response-copy branches: PASSTHRU_FSCTL and the default QUERY_INFO path. The QUERY_INFO branch clamps qi.input_buffer_length to the server-reported OutputBufferLength and then copies qi.input_buffer_length bytes from qi_rsp->Buffer to userspace, but it never verifies that the flexible-array payload actually fits within rsp_iov[1].iov_len. A malicious server can return OutputBufferLength larger than the actual QUERY_INFO response, causing copy_to_user() to walk past the response buffer and expose adjacent kernel heap to userspace. Guard the QUERY_INFO copy with a bounds check on the actual Buffer payload. Use struct_size(qi_rsp, Buffer, qi.input_buffer_length) rather than an open-coded addition so the guard cannot overflow on 32-bit builds.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected f5778c398713692a16150ae96e5c8270bab8399f before e66bdc0704977ecee667a81d38255b579c2353d0; affected f5778c398713692a16150ae96e5c8270bab8399f before 9e203dbb5402897c43130fb171a2617008a91f45; affected f5778c398713692a16150ae96e5c8270bab8399f before 1dd757379997b71a328a4b591ffaf481acd0ead1; affected f5778c398713692a16150ae96e5c8270bab8399f before a34d456934fe42e4da5d2cc07787bf418bee99c6; affected f5778c398713692a16150ae96e5c8270bab8399f before ac2f14e4705d020f04e806efa0d49ab8dc2b145f; affected f5778c398713692a16150ae96e5c8270bab8399f before 078fae8f50adebb903ccf2252b44391324571e78; affected f5778c398713692a16150ae96e5c8270bab8399f before 85fd46ee26a11841c670449508025965f61ce131; affected f5778c398713692a16150ae96e5c8270bab8399f before a58c5af19ff0d6f44f6e9fe31e33a2c92223f77e |
| Linux / Linux | affected 5.1; unaffected 0 before 5.1; unaffected 5.10.259 through 5.10.*; unaffected 5.15.210 through 5.15.*; unaffected 6.1.175 through 6.1.*; unaffected 6.6.136 through 6.6.*; unaffected 6.12.84 through 6.12.*; unaffected 6.18.25 through 6.18.*; unaffected 7.0.2 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/e66bdc0704977ecee667a81d38255b579c2353d0
- https://git.kernel.org/stable/c/9e203dbb5402897c43130fb171a2617008a91f45
- https://git.kernel.org/stable/c/1dd757379997b71a328a4b591ffaf481acd0ead1
- https://git.kernel.org/stable/c/a34d456934fe42e4da5d2cc07787bf418bee99c6
- https://git.kernel.org/stable/c/ac2f14e4705d020f04e806efa0d49ab8dc2b145f
- https://git.kernel.org/stable/c/078fae8f50adebb903ccf2252b44391324571e78
- https://git.kernel.org/stable/c/85fd46ee26a11841c670449508025965f61ce131
- https://git.kernel.org/stable/c/a58c5af19ff0d6f44f6e9fe31e33a2c92223f77e
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.